{"product_id":"high-output-alternator-for-mercury-mountaineer-2002-2004-4-6l","title":"High Output Alternator for Mercury Mountaineer (2002-2004) 4.6L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 300-Amp Alternator for 2002-2004 Mercury Mountaineer (U152)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 300-amp high-output alternator upgrades the factory charging system on the 2002-2004 Mercury Mountaineer to supply stable voltage and eliminate current drop under heavy accessory and auxiliary electrical loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercury Mountaineer Electrical Bottleneck\u003c\/h3\u003e\n\u003cp\u003eFactory charging systems on the \u003cstrong\u003eU152\u003c\/strong\u003e platform utilize standard 105-to-130 amp units engineered strictly for baseline electrical draws. When subjected to extended runtime, winch duty, audio power demands, or auxiliary lighting, OEM units suffer severe thermal saturation and rotor slip. Underhood operating temperatures generated by the \u003cstrong\u003e4.6L Modular V8\u003c\/strong\u003e lead to high-resistance buildup across the factory diode pack. Over time, this induces stator insulation breakdown, premature rectifier burn-through, and critical low-RPM voltage sag, frequently dropping electrical systems below the 12.6V threshold during prolonged idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis Made-in-USA 300-amp unit features heavy-gauge hairpin stator windings and oversized internal aluminum heat sinks paired with high-amperage avalanche rectifiers. Operating efficiency is maximized to maintain consistent charging output at lower engine RPMs while shedding heat under high-stress conditions. By lowering internal winding resistance and replacing fragile factory components matching \u003cstrong\u003eF8OU10300CA\u003c\/strong\u003e specifications, this alternator ensures a clean 14.4-volt stream that stabilizes powertrain control modules and sustains optimal battery charge.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Alternator (300 Amp High Output)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2002-2004 Mercury Mountaineer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.6L Modular V8 \/ U152\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e239 hp \/ 282 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e7773, 7773n, F8OU10300CA, F8OU10300CB, F8OUCA, F8OUCB, F8OUCC, 7773-300A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002-2004 Mercury Mountaineer Base (4.6L V8)\u003c\/li\u003e\n  \u003cli\u003e2002-2004 Mercury Mountaineer Premier (4.6L V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the U152 Mountaineer?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for the 2002-2004 Mercury Mountaineer equipped with the \u003cstrong\u003e4.6L Modular V8\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 4.0L V6 models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my charging cables when installing this unit?\u003c\/h4\u003e\n\u003cp\u003eA Big 3 wiring upgrade (0-gauge charging cable, engine ground, and chassis ground) is strongly advised to support peak 300-amp loads safely and prevent circuit resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercury Towing \u0026amp; Utility Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for demanding load requirements, heavy hauling setups, and extended idling, this high-output unit supplies relentless current delivery to keep your utility truck's accessory systems operating reliably on highway or worksite.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565894402296,"sku":"DS-EYILZ3HI6","price":290.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-mercury-mountaineer-2002-2004-4-6l-1.jpg?v=1791078067","url":"https:\/\/performancechiptuning.com\/fr\/products\/high-output-alternator-for-mercury-mountaineer-2002-2004-4-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}